Table 2.
Distribution of risk factors in the overall population and within the subgroups of early and late closure.
| Total [n = 409] | Closure <150 days [n = 229] | Closure > 150 days [n = 180] | p-value | |
|---|---|---|---|---|
| Age [M (SD)] | 59.5 years (13.1 years) | 57.5 years (14.6 years) | 60.3 years (11.0 years) | 0.028* |
| Age groups [% ( n )] | 0.122 (ns) | |||
| <60 years | 45.97 (188) | 49.34 (113) | 41.67 (75) | |
| >60 years | 54.03 (221) | 50.66 (116) | 58.33 (105) | |
| Sex [% ( n )] | 0.630 (ns) | |||
| Men | 72.13 (295) | 71.18 (163) | 73.33 (132) | |
| Women | 27.87 (114) | 28.82 (66) | 26.67 (48) | |
| Primary diagnosis[% ( n )] | 0.001** | |||
| Rectal cancer | 73.35 (300) | 65.50 (150) | 83.33 (150) | <0.001** |
| Ulcerative colitis | 13.20 (54) | 17.90 (41) | 7.22 (13) | 0.002* |
| Peritoneal carcinomatosis | 7.58 (31) | 10.04 (23) | 4.44 (8) | 0.034* |
| Sigmoid (colon) cancer | 5.87 (24) | 6.55 (15) | 5.00 (9) | 0.508 (ns) |
| Primary surgery[% ( n )] | 0.491 (ns) | |||
| Colectomy, hemicolectomy, sigma resection | 7.34 (30) | 7.42 (17) | 7.22 (13) | 0.938 (ns) |
| Extraperitoneal rectum resection (cytoreductive surgery) | 3.42 (14) | 4.37 (10) | 2.22 (4) | 0.236 (ns) |
| Low anterior rectum resection, proctocolectomy | 89.24 (365) | 88.21 (202) | 90.56 (163) | 0.447 (ns) |
| Reconstruction[% ( n )] | 0.277 (ns) | |||
| End to end | 84.60 (346) | 88.65 (203) | 79.44 (143) | |
| Side to side | 11.25 (48) | 10.04 (24) | 12.78 (24) | |
| Suture technique[% ( n )] | 0.359 (ns) | |||
| Running suture | 91.93 (376) | 94.76 (217) | 88.33 (159) | |
| Single stitches | 2.44 (10) | 3.06 (7) | 1.67 (3) | |
| Stapler | 0.49 (2) | 0.87 (2) | 0 (0) | |
| Adjuvant chemotherapy [% (n)] | 49.88 (204) | 28.33 (97) | 59.44 (107) | 0.014* |
Missing documentation about surgical reconstruction; *p < 0.05, **p < 0.001.